Well strainer



April 25, 1939.

L. A. LAYNE WELL STRAINER LIO I n I l6 l6 INVENTOR LESLIE A. LAYNE ATTORNEYQS.

Patented Apr. 25, 1939 UNITED STATES PATENT OFFICE WELL STRAINER Leslie A. Layne, Houston, Tex.

Application May 5, 1936, Serial No. 77,903

1 Claim. (01. 1666) This invention relates to well strainers and Fig. 4 differs from that illustrated in Fig. l in. more particularly to frames for supporting the that the rings l6 are located on the outside of the straining element. bars.

It is an object of the invention to provide a It will be noted that the bars and rings in both frame which will present a minimum of obstruc-v constructions are spaced a large distance apart 5 tion to inward flow. in order to offer a minimum of interference to Another object of the invention is to provide inward flow of the fluid. It will also be noted that a frame of economical construction. the joints between the rings l6 and the bars I! Other objects and attendant advantages will are made flush so as not to interfere with the appear in'the following description of one pracwindings of the wire I9. 10 tical embodiment of the invention illustrated in It should be particularly noted that the comthe accompanying drawing, in which plementary interfitting recesses of the bars and Fig. 1 is a vertical cross section of a well screen the ring serve to fix the parts in their relative embodying the present invention. position and the close fitting shoulders of the Fig. 2'- i s a fragmentary transverse sectional recesses reenforce the adjoining parts to form view of the well screen shown in Fig. 1 and illusa firm joint. 1 trating the insert therein. When the frame I0 is assembled then the open- Fig. 3 is a fragmentary inside elevational view ings l9 formed by the bars and rings are ready of the frame, and showing the wire type of to receive the inserts such as 20. Such an. insert strainer, and is seen in Fig. 2 and comprises a body 2| formed Fig. 4 is a fragmentary inside elevational view with suitable gauge openings 22 so that a strainer of a modified form of the frame construction. of the proper size is thus formed. It should be The well screen illustrated in the drawing comnoted that the walls 23 and 24 of the bars are prises a frame I ll which is made up of an upper substantially parallel so that the inserts may be nipple member II and a lower nipple member moved into position and they may thereafter be 25 I2 connected together by spaced bars l3. The welded in position if desired. When all of the bars l3 are cut away at l4 on the inside of the openings are filled the strainer will be complete, ends thereof and are arranged to fit overthe light in weight and compact while being suffireduced ends M on each of the couplings ll ciently rigid to withstand the stresses applied. and I 2. The bars l3 are connected together at In lieu of the inserts 20, however, a wire spaced intervals by internal rings Hi, the bars and strainer member 25 may be wrapped around the the rings being formed with complementary re-' frame in a manner Well known in applying cesses l'land I8 designed to interfit to form morstrainer wire to perforated pipe.

tised joints. Broadly the invention contemplates an eco- If desired, the frame and strainer wire may be nomical and durable frame for well strainers. made ofcorrosion proof material such as stainless What is claimed as new is: steel and in this manner a very substantial con- A strainer for wells comprising a frame, said struction is provided. frame including longitudinally spaced bars.

In the" construction of the frame Hi the bars spaced annular rings engaged to said bars, and and rings are first assembled and welded or strainer inserts disposed in the openings formed 0 otherwise attached after which the couplings H by aid bars and rings, and I! are added and fixed to the ends of the LESLIE A. LAYNE. bars. The modified form of frame illustrated in 

